1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3310ddee27a41117206c42cb63dc8499933c0ad530717da0593d8f38e67eec49. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5bfe535c-5d6a-42a6-8e4a-7f91108147f4.json and https://artists.proofprofile.net/proofs/artist/5bfe535c-5d6a-42a6-8e4a-7f91108147f4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4ea400e204ac91195f4de2deea98a392da4f077e4a78fc66460b69209db339. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABT1439432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452925cb4cddf01e1e3e7804bb15025452c68802ccc0f59b107f0d2ff829b9a2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABT1439434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f0b9f4bdd8df3d5441774eadf1ddd29cbdc4c9ab43ecc2c3204742a3292bcd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABT1439467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71a5f0c34bd9e08d9ab1c7a172a1ce9366a96a8dd9c773c1df0c0bc429c4156. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:53:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABT1439468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bf180a495c7f7fe441f2f1f8306d5ed9a712102a043a7beda41bed63aa89c2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABT1439471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c939ba1ed24f10136bd37ef8a98980c016772f61bd8123a17c31474219beca7. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABT1439473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd442592f85abbfa1a356643b7aeb88026f8dbc10af8fd7ca30a73ceb6397547. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABT1439474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6972e09d27c541601e28242ff4d10b3b16491e15206406d79b3b780acffbb0c2. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:19:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABT1439477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5daec942846679ba5a79b133fef4d808c90c84bf0a7a2d8b9c36223250fbf692. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:20:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABT1439479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b34f2d124074b3fc11a079b1be4809e73242ffc1769a9ef064530559e10f41. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABX1437824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de1db05a243ae68700019eb0cc51bbe99412607be9722a9c274cd2391f4c9b4. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACY1700914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078dc13e22631e755bfad8e09f1150e8f61b1822da79e81466dfea7f89c3ab4f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACY1700934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de19d9483525f449526d2d046c8ae4e249d294b5706ab30916aa13f0ece7252. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACY1700966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6dc6474c2c9c1b5e102d74eda5e3d486bc1fc0dd9f50f008be773a546262184. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACY1700967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a5fc5680078c83a8872e486503a85f7f3f9032e40610d6f2149c80c99715b2. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACY1700984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b8199b4726df0fc1186e39d77c33704a63e29353b34c61af7756e704a84389. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEB1992889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8cfed1a86a1c7f1ccb517128d8a5e8733999656457e858a2e6a889520f38b1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAER2058712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9566a24b88d4ba32ab17746410ea9bfff4a8f4456fa83da71c1f25e8f61577b. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:28:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFC2095180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1beb1852b45ad532e6149b0b3da8d7cf1095bec636f03cc11ac4197d771d9c72. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFJ2144082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b93831ddbe42bb3f091435c066dbd24fd8befdc923b2a0f2ed695fb7e505142. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAHK2361579.